package socket;

import java.io.*;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
import java.util.Scanner;

public class Client {
    private Socket socket;

    public Client() {
        try {
            /*
            实例化Socket时就是与远程服务器建立连接的关系
            需要传递两个参数：
            1.服务器的IP地址，用于找到网络上对方的计算机
            2.服务端口
             */
            System.out.println("正在连接服务器...");
            socket = new Socket("localhost",8088);//localhost表示本机IP
            System.out.println("与服务器建立连接成功！");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void start(){
            try {
                //低级流：作用，将写出的字节发送给建立连接的远程计算机
                OutputStream out = socket.getOutputStream();
                OutputStreamWriter osw = new OutputStreamWriter(out, StandardCharsets.UTF_8);
                BufferedWriter bw = new BufferedWriter(osw);
                PrintWriter pw = new PrintWriter(bw,true);//自动行刷新

                Scanner scan = new Scanner(System.in);
                while (true){
                    String line = scan.nextLine();
                    if ("exit".equals(line)){
                        break;
                    }
                    pw.println(line);
                }
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                        socket.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
    }

    public static void main(String[] args) {
        Client client = new Client();
        client.start();
    }
}